body {
  margin: 0;
  font-family: "SF Pro Display", "SF Pro Icons", "Helvetica Neue", "Helvetica",
    "Arial", sans-serif;
  background-color: #DCDCDC;
}

.AlphaNumeric {
  text-align: center;
  margin-top: 14%;
  background-color: white;
  margin-left: 35%;
  margin-right: 35%;
  padding: 5% 0; 
}

.correct{
    color: rgb(62, 196, 62);
}
.wrong{
    color: tomato;
}

span{
    font-size: 20px;
    color: rgb(62, 196, 62);
    font-weight: bold;
}